Based on the options provided, the most relevant response is:
b. they argue that the descendants of enslaved people have suffered because of slavery
Supporters of slavery reparations believe that the descendants of enslaved people should receive reparations because they argue that the historical injustices and suffering caused by slavery have had lasting and intergenerational effects. These effects include economic disparities, social inequalities, and systemic disadvantages that have persisted over time. Reparations are seen as a way to address and redress these historical wrongs by providing compensation and resources to the descendants of those who were enslaved.